Components of a friendly letter:

(Your address) P.O. Box 98
Morristown, AZ 85342

Date
Dear _, (Salutation)

This is called the body of the letter. It is where you put the message you want to share. It can be a thank you, an invitation or share information to name just a few purposes. It can be one paragraph or several. Each paragraph should focus on one topic. Don't forget to indent each paragraph and use punctuation.

Sincerely, (closing)
Your Name